Pull part of the V-belt up and over the top of the large pulley with one hand

Maintain tension on the belt while using your other hand to rotate the pulley clockwise until the belt comes off. This will require a bit of force

Remove the belt slowly and be careful not to get your fingers stuck between the belt and pulley

Clean any dirt or residue off of the area where the belt rode on the pulleys to ensure the new belt doesn't get any unnecessary wear